In this paper, I set out to challenge the assumptions of unrelatedness between twenty-century Jewish and Catholic renewal. Echoes of various aspects of the Jewish renewal of the interwar period can be found in the writings of many central figures of the later Catholic renewal, who encountered these ideas through direct reading of the Jewish thinkers or through the mediation of major theological figures, and some of those echoes even made their way to the conciliar documents.
In fact, I claim that there is a vast network of subterranean intellectual connections that extends the links between the Second Vatican Council and Judaism far beyond the Nostra Aetate Declaration to which it is usually reduced. My paper will uncover some of these unknown sides of the European movement of Catholic renovation before and throughout the Vatican Council.